<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/107715>107715</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [clang] `_Pragma("clang diagnostic ignored \"-Wconstant-evaluated\"")` with push+pop sometimes doesn't work when there are macros involved
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            clang
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          MitalAshok
      </td>
    </tr>
</table>

<pre>
    Minimised to <https://godbolt.org/z/96d8bnsKa>:

```c++
#define _LIBCPP_DIAGNOSTIC_POP _Pragma("clang diagnostic pop")

#define A \
  (_Pragma("clang diagnostic push")                              \
   _Pragma("clang diagnostic ignored \"-Wconstant-evaluated\"")  \
 __builtin_is_constant_evaluated()                             \
 _LIBCPP_DIAGNOSTIC_POP)

#define echo(...) __VA_ARGS__

static_assert(echo(A), "");
```

```
<source>:11:20: warning: '__builtin_is_constant_evaluated' will always evaluate to 'true' in a manifestly constant-evaluated expression [-Wconstant-evaluated]
   11 | static_assert(echo(A), "");
      | ^
<source>:6:4: note: expanded from macro 'A'
    6 | __builtin_is_constant_evaluated()                             \
      | ^
```
</pre>
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